The effect of organic matter-additions on soil respiration, soil nitrogen and microbila activity.
D001395:Azotobacter / Q000378:metabolism*; D002244:Carbon; D002245:Carbon Dioxide; D055598:Chemical Phenomena; D002621:Chemistry; D003013:Clostridium / Q000378:metabolism*; D005308:Fertilizers; D009586:Nitrogen Fixation; D012037:Refuse Disposal; D012987:Soil / Q000032:analysis
D005308:Fertilizers; D012987:Soil; D002245:Carbon Dioxide; D002244:Carbon